Author(s): WEN Yuan-guang, ZHANG Jian, YAN Li, ZHU Hong-guang, ZHOU Xiao-guo, YOU Ye-ming, LU Zhi-cheng, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Forestry College of Guangxi University, Forestry College of Beijing Forestry University
Pages: 573-577
Year: 2015 Issue:  6
Journal: Guangxi Sciences
Keyword:  legume; functional group; restoration; karst desertification; biomass carbon stock;
Abstract: 【Objective】Through afforestation of legume species,the effects of restoration on ecological functions were evaluated in order to provide guidance for future restoration projects on karst desertification lands.【Methods】Three restoration forests(Acrocarpus fraxinifolius,Dalbergia odoriferapures,and the mixture of A.fraxinifolius and D.odorifera)and one experimental control(natural recovery)were estimated.Their differences in biomass,carbon stocks and carbon sequestration rate were evaluated,including above-ground and below-ground carbon pools,forest floor litter,and woody and herbaceunce species.【Results】The biomass,carbonstocks,and carbon sequestration rate in the three restoration types were significantly higher than that in the control sites(more than over 8times),but there were no significant differences in biomass,carbon stocks,and carbon sequestration rate between the restoration types.Among the three restoring models,the biomass,carbon stocks,and carbon sequestration rate were highest in A.fraxinifolius pure forest,followed bythe mixture of A.fraxinifolius and D.odorifera,and lowest in D.odorifera pure forest.【Conclusion】This study clearly demonstrated that active restoration can enhance ecosystem carbon sequestration in the area of karst desertification.